Now I am looking into ILDA equipment and DMX equipment to connect it to. I have found a few ILDA <-> USB adapters ranging from $60 - $125 with included ILDA software.

My main concern is the ILDA adapter itself. Is this a standard component such as USB <-> serial adapter? Or do they have variable quality? If so, what are the parameters I should look at when buying an ILDA <-> USB adapter?

Do for instance all ILDA adapters support dimming colors so that you can mix different shades of color outputs on RGB lasers? Or is this up to the projector itself?

I saw that my projector takes 0 - -2.5V for RGB pins on the ILDA interface for instance. Presuming this regulates the amount of output for this color?